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Grimsby Old Blockhouse

Also known as, or recorded in historical documents as; Tresco Old Blockhouse

In the civil parish of Tresco.
In the historic county of Isles of Scilly (Modern Authority of Isles of Scilly, 1974 county of Isles of Scilly).

Blockhouse, late C16 or early C17 on site of an earlier blockhouse dating from 1548-1552. Roughly coursed granite rubble. Rectangular plan. Top of the platform is enclosed by walls, originally surmounted by a parapet with embrasures. Stairs to east. Winder stairs to original lean-to in south-east corner, with plain granite open fireplace; remains of later room constructed in south-east corner of platform. Covers Old Grimsby Harbour, and is probably one of the blockhouses built on Tresco under Sir Francis Fleming, and later John Kiligrew, captain of Pendennis Castle, between 1548 and 1552.

This site has been described as a;
Artillery Fort.
The confidence that this site is a medieval fortification or palace is Certain.
Masonry ruins/remnants remains.

This site is a scheduled monument protected by law.
This site is a Grade 2 listed building protected by law*. (Images of England number 62554)

The Ordnance Survey Map Grid Reference is SV89721546

Modern Map fromOrdnance Survey logo

Good for landscape form and features

Modern Map from streetmap logo

Good for general location

Sources of information, references and further reading

PastScape number; 303400

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*The listed building may not be the actual medieval building, but a building on the site of, or incorporating fragments of, the described site.

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This record last updated on Friday, April 6, 2007

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